CSES - Aalto Competitive Programming 2024 - wk7 Homework - Results
Submission details
Task:Download Speed
Sender:Rasse
Submission time:2024-10-11 22:35:09 +0300
Language:C++ (C++11)
Status:READY
Result:
Test results
testverdicttime
#10.00 sdetails
#20.00 sdetails
#30.00 sdetails
#4ACCEPTED0.00 sdetails
#50.04 sdetails
#60.01 sdetails
#70.03 sdetails
#80.00 sdetails
#90.00 sdetails
#100.00 sdetails
#110.01 sdetails
#120.00 sdetails

Code

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <numeric>
#include <unordered_map>
#include <queue>
#include <climits>
#include <cmath>
 
#define int long long
using namespace std;

int dfs(vector<vector<pair<int, int>>>& adj, vector<bool>& visited, int threshold, int index, int destination, int minVal)
{
    if (index == destination)
        return minVal;

    for (auto& neighbour : adj[index])
    {
        if (!visited[neighbour.first] && neighbour.second >= threshold)
        {
            visited[neighbour.first] = true;
            int val = dfs(adj, visited, threshold, neighbour.first, destination, min(neighbour.second, minVal));
            visited[neighbour.first] = false;
            if (val != 0)
            {
                cout << neighbour.first << " ";
                //rAdj[neighbour]
                neighbour.second -= val;
                return val;
            }
        }
    }

    return 0;
}

void solve()
{
    int n, m;
    cin >> n >> m;

    vector<vector<pair<int, int>>> adj(n, vector<pair<int, int>>());
    vector<vector<pair<int, int>>> rAdj(n, vector<pair<int, int>>());
    int initialThreshold = 0;
    for (int i = 0; i < m; i++)
    {
        int a, b, c;
        cin >> a >> b >> c;
        a--;b--;

        adj[a].push_back({b, c});
        rAdj[b].push_back({a, c});
        initialThreshold += c;
    }
    
    //cout << "Starting path find\n";
    vector<bool> visited(n, false);

    int result = 0;
    bool run = true;
    while (run)
    {
        int i;
        for (i = initialThreshold; i > 0; i >>= 1)
        {
            int val = dfs(adj, visited, i, 0, n - 1, INT_MAX);
            if (val != 0)
            {
                result += val;
                cout << endl;//DEBUG("\n");
                break;
            }
        }
        if (i == 0)
            run = false;
    }
    
    cout << result << endl;
}
 
signed main()
{
    int t = 1;
 
    // cin >> t;
 
    for (int i = 0; i < t; i++)
        solve();
 
    return 0;
}

Test details

Test 1

Verdict:

input
4 3
1 2 5
2 3 3
3 4 6

correct output
3

user output
3 2 1 
3

Test 2

Verdict:

input
4 5
1 2 1
1 3 1
2 3 1
2 4 1
...

correct output
2

user output
3 2 1 
1

Test 3

Verdict:

input
4 5
1 2 1000000000
1 3 1000000000
2 3 1
2 4 1000000000
...

correct output
2000000000

user output
3 1 
3 2 
2000000000

Test 4

Verdict: ACCEPTED

input
2 1
2 1 100

correct output
0

user output
0

Test 5

Verdict:

input
2 1000
1 2 1000000000
1 2 1000000000
1 2 1000000000
1 2 1000000000
...

correct output
1000000000000

user output





...
Truncated

Test 6

Verdict:

input
500 998
1 2 54
1 3 59
1 4 83
2 5 79
...

correct output
60

user output
499 88 48 7 4 1 
499 204 68 59 41 2 
60

Test 7

Verdict:

input
500 998
1 2 530873053
1 3 156306296
1 4 478040476
3 5 303609600
...

correct output
1093765123

user output
499 440 300 75 41 39 8 6 5 3 1...
Truncated

Test 8

Verdict:

input
2 1
1 2 1

correct output
1

user output

1

Test 9

Verdict:

input
4 5
1 2 3
2 4 2
1 3 4
3 4 5
...

correct output
6

user output
3 2 
3 1 
6

Test 10

Verdict:

input
4 5
1 2 1
1 3 2
3 2 1
2 4 2
...

correct output
3

user output
3 1 
3 1 2 
3 2 
3

Test 11

Verdict:

input
10 999
1 2 1000000000
1 2 1000000000
1 2 1000000000
1 2 1000000000
...

correct output
111000000000

user output
9 8 7 6 5 4 3 2 1 
9 8 7 6 5 4 3 2 1 
9 8 7 6 5 4 3 2 1 
9 8 7 6 5 4 3 2 1 
9 8 7 6 5 4 3 
...
Truncated

Test 12

Verdict:

input
7 9
1 2 1
1 3 1
1 4 1
2 5 1
...

correct output
2

user output
6 4 1 
1